The News Provided by the Military to Soldiers Serving in Vietnam

Multiple Choice

The news provided by the military to soldiers serving in Vietnam was sometimes censored. Ambitious GIs put to use the abundance of available military communications equipment and became Vietnam's underground radio pirates for uncensored news and music. Advice,information,and support not communicated by upper echelon military personnel were passed on to soldiers in the field through their field radios. Which type of communication channel would this be an example of?

A) downward  
B) upward  
C) formal  
D) informal